C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 21/00 (2006.01) C08J 3/215 (2006.01) C08K 9/06 (2006.01) C09C 1/30 (2006.01) C09C 1/56 (2006.01)
Patent
CA 2328928
The invention relates to fine particled powdery rubbers containing loading material. Said rubbers remain flowable after mechanical loading. The invention also relates to a method for the production thereof, whereby the rubber powder is obtained in two stages of precipitation. The invention further relates to the use of said powders in the production of vulcanizable rubber mixtures. The loading materials used such as precipitated silicic acids or carbon blacks known in the field of rubber are, especially with regard to said silicic acids, modified on the surface by means of organosilicon compounds.
L'invention concerne des caoutchoucs en fines particules, sous forme de poudre et contenant des charges, qui restent, même après avoir subi une charge mécanique, coulants. L'invention concerne également un procédé de production de ces caoutchoucs, selon lequel la poudre de caoutchouc est obtenue en deux étapes de précipitation, ainsi que l'utilisation de ces poudres pour produire des mélanges de caoutchoucs vulcanisables. Les matières de charge utilisées, lesquelles peuvent être aussi bien des acides siliciques que des noirs de carbone connus dans le domaine du caoutchouc, sont, avant tout en ce qui concerne les acides siliciques, modifiés par des composés organosiliciques.
Ernst Uwe
Gorl Udo
Lauer Hartmut
Stober Reinhard
Fetherstonhaugh & Co.
Pku Pulverkautschuk Union Gmbh
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